I would like to use 1 account for keeping private files synchronised and another for business files, which will be read by others. I have different e-mail addresses for business and private. The private arrangement is between home, office and laptop. The business arrangement is between these plus business partners. I have tried setting up this arrangement but my efforts are not successful. Is thus possible? If so, how do I instruct the Ubuntu One Manager which folder should be synchronised in which account?
There isn't any support in the client for managing multiple accounts in the Ubuntu One client software.
That said, you should be able to achieve the above using a single account: